70784

Appears in sequences

• Number of partitions into non-integral powers.at n=23A000160
• Smallest number such that n-th iterate of Chowla function is 0.at n=34A002954
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 19.at n=13A031697
• Numbers k such that both k and k+1 are abundant.at n=15A096399
• Numbers k such that both sigma(k) >= 2*k-1 and sigma(k+1) >= 2*(k+1)-1.at n=17A103289
• a(n) = 361*n^2 + 2*n.at n=13A158309
• G.f. satisfies: A(x) = 1/(1 - x/A(-x*A(x)^8)^2).at n=7A213230
• Number of length 2+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.at n=40A250321
• Numbers k such that both k and k+1 are Zumkeller numbers (A083207).at n=13A328327
• Numbers k such that k and k+1 have different (ordered) prime signatures and d_3(k) = d_3(k+1), where d_3 is A007425.at n=8A333057
• a(n) is the index of the smallest n-gonal pyramidal number divisible by exactly n n-gonal pyramidal numbers.at n=14A358059
• Triangle read by rows: T(n,k) is the k-th Lie-Betti number of a complete graph on n vertices, n >= 1, k >= 0.at n=50A360625
• Triangle read by rows: T(n,k) is the k-th Lie-Betti number of a complete graph on n vertices, n >= 1, k >= 0.at n=51A360625
• Numbers k such that k and k+1 are both in A376616.at n=22A376793